By                               Rahul Rao               |               Published May 25, 2023 6:00 AM EDT

Danish painters used beer to create masterpieces, but not the way you think

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2023-05-29 12:30:05

By Rahul Rao | Published May 25, 2023 6:00 AM EDT

Behind a beautiful oil-on-canvas painting is, well, its canvas. To most art museum visitors, that fabric might be no more than an afterthought. But the canvas and its chemical composition are tremendously important to scientists and conservators who devote their lives to studying and caring for works of art.

When they examine a canvas, sometimes those art specialists are surprised by what they find. For instance, few conservators expected a 200-year-old canvas to contain proteins from yeast and fermented grains: the fingerprints of beer-brewing.

But those very proteins sit in the canvases of paintings from early 19th century Denmark. In a paper published on Wednesday in the journal Science Advances, researchers from across Europe say that Danes may have applied brewing byproducts as a base layer to a canvas before painters had their way with it.

“To find these yeast products—it’s not something that I have come across before,” says Cecil Krarup Andersen, an art conservator at the Royal Danish Academy, and one of the authors. “For us also, as conservators, it was a big surprise.”

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